'Harilo Ranga Hari', a single from Prem Kumar, was unveiled by the makers of the film on Thursday. The song, a rap track, with rural instrumentation forms the background to Santosh's character opening a detective agency, after getting rejected in umpteen proposals. The song is sung by Sricharan Pakala, Nalini Srikar Satuluri and Dasari Kondappa. The single is composed by S Anant Srikar, with lyrics by Kittu Vissapragada. 

Prem Kumar is headlined by Santosh Shoban, with Rashi Singh, Krishna Chaitanya, Ruchitha Sadineni, Krishna Teja Sudarshan, Ashok Kumar and Srividya forming part of the supporting cast. This is Santosh's fourth release of the year, after Kalyanam Kamaneeyam, Sridevi Shoban Babu and Anni Manchi Sakanumule. Abhishek Maharshi, who has previously played character actor roles in films like Padi Padi Leche Manasu, Maharshi and Phalana Abbayi Phalana Ammayi, is making his directorial debut with Prem Kumar. Abhishek co-wrote the film with Anirudh Krishnamurthy. 

Prem Kumar is produced by Shiva Prasad Panneeru under the banner Sharanga Entertainments, with cinematography by Rampy Nandigam and editing by Garry BH. Ajay Gadde is the executive producer of the film.

Prem Kumar is releasing on August 18.